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Re: fsanitize=bounds-strict caught potential error
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From: |
Andreas Schwab |
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Subject: |
Re: fsanitize=bounds-strict caught potential error |
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Date: |
Sun, 05 Dec 2021 16:24:46 +0100 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.90 (gnu/linux) |
On Dez 05 2021, Eli Zaretskii wrote:
>> From: Po Lu <luangruo@yahoo.com>
>> Date: Sun, 05 Dec 2021 21:04:47 +0800
>>
>> I don't know if this message is correct or not, but I got
>>
>> xdisp.c:30394:37: runtime error: index -1 out of bounds for type
>> 'iterator_stack_entry [5]'
>
> The compiler doesn't know enough to realize that this code can never
> be executed with it->sp < 1. This code is there since 2003, and never
> gave us any trouble.
If you put a breakpoint there, you will see it.sp == 0 most of the time
actually.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
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